Jahshaka is a video and film compositing, editing and special fx system that uses OpenGL & OpenML hardware rendering to give operators real time interactivity. The system is cross platform, and also includes full CG, paint and image processing modules.

High quality volume graphics on consumer PC hardware. This GPL project is a graphics application for the visualization of 3D volume data on uniform rectilinear grid, as they arise from tomographic measurement or numerical simulation in computational scie

ABE is a small, fast and convenient program for visualizing and modeling experimental bioassay data. The data can be modeled using either polynomials or a more specific four-parameter model based upon the standard, sigmoidal dose-response curve.

Tampa Network Operating System (TNOS) is an Amateur Radio application providing a BBS, chat, and many other internet servers. It has been in development since 1991 and is used world-wide.
The current release (3.0) is ONLY available (at this time) via

osgJuggler is a library suite that makes developing computer graphics appications for virtual reality easier. osgJuggler is a framework that allows you to develop a scene with OpenSceneGraph and view it on any platform supported by VRJuggler.